Improvement in printing-telegraphs



A. A. KNUDSON.

Printing Telegraphs.

No. 140,143. Patentedluhe 24,1873.

@ iiiim ADOLPHUS A. KNUDSON, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN PRlNTIN G-TELEGRAPHS.

Specification forming part of Letters Patent No. 1140, E fl3, dated June24, 1873; application filed May 15,1873.

. ism under the control of the operator, and by which messages arereceived and recorded by as many of said instruments as are placed inthe telegraphic circuit; and theinvention consists, first, in the use ofan independent pair of electra-magnets placed in the same circuit as thepress or printing magnets, it on1y one wire is used, and so combinedwith suitable mechanism in the apparatus as to employ their power inwinding up a spring or weight when their circuit is closed, so that thereactive force of said spring or weight shall re volvc the type-wheelwhenever permitted to revolve by the vihrationsof the escapement, whichis controlled or regulated by a pair of pole-changing magnets under thecontrol of the operator; and, second, the invention consists in thecombination, with such an apparatus, of a bell and striking mechanismoperated by the press or printing magnets, and in synchronism with thetype-whee], so that the operator may at a desired point in therevolution of said type-wheel cause signals to be given by striking thebells, or as many as are connected with the circuit, by simply closingthe circuit on the press or printing mag nets, as will he hereinafterexplained.

Figure 1 is a side elevation of the entire apparatus taken fromtheright-hand side, and parallel with the axis of the type-wheel, which isshown with some of the letters upon its perimeter. Fig. 2 is a partialsection and elevation made at a right angle to Fig. l, the type-wheeland its presser being shown in dotted or broken lines, while the windingand press magnets and striking mechanism are shown in full or solidlines. Fig. 3 is a plan of the clutch that connects the reactive springor weight with the type'revolving mechanism.

The entire mechanism is mounted upon and within the base or pedestal, asshown at A, the type-wheel B being fixed upon an axis, 0, which ismounted in suitable hearings in the upright frames 1) I), which alsosupport the escapement E, and its axis, F, upon one end of which, as atG, is a forked arm, which engages with the armature H, of thepole-changng magnets I, which are arranged to be always in thecircuitalon g with the press-magnetsJ, when onlyone wireis used in thecircuit, and combinedwith them are also the winding or power-accumulnting magnets K, which are thrown into the circuit by the switch, as shownat L, Fig, the tongue of said switch be ing attached to the armature ofthe pressmagnet, so that when its circuit is closed the magnets K willalso be cut into the circuit. But all the devices here referred to areold or well known, except the third pair of winding oraccumulatingmagnets shown at K, Fig. 2, where one of the principal characteristicsof my invention is distinctly shown or illustrated, and where thearmature M is represented in contact with the magnet K. Said armature issuspended to the uprights D D by a pivotal connection, as shown at m,Fig. 2, and from said armature an arm, as at N, extends to some distancein order to give con siderable range of motion, and-to the end of saidarm a spiral spring, as at O, is attached, and the other end of saidspring is suspended to some suitable portion of the frame, so that, asthe arm N is drawn down by the attraction of the armature upon themagnets K, the

I springs reaetivexforce can be utilized in rotating the typewh'eel orprinting-disk. This is accomplished by connecting thelever N with theclutch or pawl and ratchet-wheel shown at Fig. 3, which is mounted. onthe axis of the master-wheel P, the teeth of which engage with the smallpinion 9 upon the axis 0 of the type-wheel B. Said connection is made bypivoting a rod at one end to the arm N, and the other to the short armof the clutch, as at a, Fig. 3, and which is there shown as arranged ata right angle to the arm that car ries the pawl g, which engages withthe ratchet-wheel R that is fastened upon the axis of the wheel P;consequently as the lever N is depressed the pawl q will be drawn backto re-engage with the ratchet, and as the spring 0 is also extended bysaid depression of the lever N its reactive force will be exerted uponthe ratchet to rotate the wheel P, and thereby the type-wheel B,whenever the escapement will permit said rotation. A weight and cordwill answer the same purpose as the spring' 0, though the spring isquite efi'ective and more convenient, as its power can be adjusted quiteeasily by connecting its fixed end to an adjusting-screw, and alsoinsulating it, not here shown. The magnets K are so placed andconnected-as to be in the circuit when the press-magnets J are inaction; consequently, whenever a character is printed the spring 0 isacted upon, provided the armature is not already upon the magnets K, andhence, by said additional pair of magnets, a reserve force is constantlymaintained to revolve the type-wheel. The second part of my invention,consisting of the signal-bell and its striking mechanism, acting incombination or synchronism with the type-wheel, is

operated by the press-magnets J, the arrna-- ture of which isshown atS,'and which is suspended t-othe frame D D similarly to the armature Mon the opposite side, and from said armature an arm, as at T, extendsout and across to the opposite side of the machine to give motion to thelever U which carries the presse'r-wheel V to raise the paper againstthe type-wheel 'B. Near the outer end of said arm T is pivoted the stemor handle of the bell-hammer W, the bell itself being shown at X,mounted upon a, column, Y, at or near the top of the uprights D D, andwhich support the bell above the machine. Upon one side of the hammerstem W is projected an arm, Z, at a right angle, or nearly so, to thestem itself, thereby forming a bracket upon the hammer-stem, and theouter end of said bracket is beveled like the end of a springbolt, andsaid end reaches out sufliciently far to be in close proximity toanother bracket, as

at Z',-which is fastened upon the axis of the type-wheel B, and uponwhich the escapementwheel Z is also fastened, and the two brackets areso arranged relatively to each that when the operator desires to strikethe signal-bell he operates the escapement-magnets I until the bracket Zis brought to the position shown at Fig. 2, and thenby closing thecircuit on the press-magnets J the arm T is. thereby depressed, beingattached to the armature S of said magnets, which suddenly carries downthe bell-hammer stem 3W and brings its brackets Z in contact with thebracket Z, whose end is also beveled, and when the two inclines meeteach other'the stemof the bellhammer is thrown quickly back, and theknob on the end thereof is thereby caused to strike the bell, and aseries of blows may be continued as long as the escapementand type-wheelremain at rest in that position, simply by opening and closing thepress-circuit, and by such means the instrument may be used to indicatethe hour or times at which any change of reports is to be made, as, forexample, the change from gold to'stocks, or between stocks of variouskinds, 850. The bell-knob is quick] y withdrawn from the bell byaspring, as'at Z one end of which is attached to the stem W, and theother to the frame D, and the lever T is also raised bya spiral spring,as seen at Z. v

The magnets are, of course, connected in the circuit in the usual mannerby the studs and screws, shown at l and 2; and it is evident thatvan'ous modifications of the mechanism may be devised without departingfrom tlie nature of my invention; therefore I claim- 1. In aprinting-telegraph, as described, the use of an independent pair ofmagnets in the same circuit with the press-magnets, or in a separatecircuit, if desired, for supplying the power to revolve the type-wheel,as described, and for the purposes set forth.

2. The combination of the magnets K, armature M, lever N, spring 0 orits equivalent, and clutch on the axis of the master-wheel P, to rotatethe type-wheel,as described, and for the purposes set forth.

3. In combination with the type-wheel of a printing-telegraph, asdescribed, the signalbell and its striking mechanism when, operated bythe press-magnets, as described, and for the purposes set iorth. f

4. The combination of the arm T with the armature S of the press-magnetsJ, the bellhammer W with its bracket Z, and the bracket Z, all combinedand arranged substantially as described, and for the purposes set forth.ADOLPHUS A. KNUDSON.

Witnesses 7 EUGENE N. E'Lio'r, Born Emor.

